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acknowledged, but it wasn't until 1970 that federal laws started to limit the many uses of asbestos. Even so, many commonly used products still contain asbestos, and the carcinogenic (cancer-causing) properties of asbestos in these products have caused an epidemic of respiratory and other cancers including mesothelioma cancer. Because of the fire- and heat-resistant properties of asbestos, it was used in many building products as a fire-retardant insulator, in plumbing, electrical, and structural applications. Unfortunately, the ubiquitous nature of building products that contain asbestos means that asbestos still has a significant presence in our lives. Below is a partial list of products that contain asbestos, many of which are still in existence in older buildings: Building exteriors Stucco Building overhangs (thermal spray) Brick and block mortar Asbestos cement siding and roof panels Building products that contain asbestos in an unbound or loosely bound form Sprayed insulation (fire-resistant, acoustic, condensation control, thermal) Insulating cements Insulation block (calcium or magnesia silicate) Textiles Flooring Sheet vinyl flooring (asbestos paper backing) Vinyl asbestos tile Floor leveling compound Walls Stippled finishes Thermal spray Plaster or drywall jointing materials Pipes Steam and hot water heating supply and return lines Gaskets in flanged pipe joints Domestic water supply and drain lines Rain water and sanitary lines Ceilings Acoustic and stippled finishes T-bar ceiling tiles Asbestos cement ceiling tiles Plaster or drywall jointing materials Service Areas Crawl spaces (insulation on pipes, ducts) Machine rooms (insulation on pipes, ducts, floors, ceilings, walls) Insulation in boiler rooms (pipes, ducts, boilers, vessels, incinerators, floors, ceilings, walls) Fan rooms (insulation of pipes, ducts, chillers, floors, ceilings, walls) Miscellaneous Incandescent light fixture backing Firestopping Welding blankets and screens Incinerators (internal insulation) Wire insulation Heating cabinet panels (asbestos cement) Fire dampers and fire stop flaps Emergency generators (thermal insulation and exhaust manifolds) Duct tape Elevator brake shoes |